<template>
    <div>
        <!-- 面包屑导航 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>商品列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片 -->
        <el-card>
            <!-- gutter控制左右间距 -->
            <el-row :gutter="20">
                <!-- 框架栅格系统  span -->
                <el-col :span="10">  
                    <!-- 只要点击清空搜索框内容就会触发clear  -->
                     <el-input placeholder="请输入内容" clearable v-model="queryInfo.query" @clear="getGoodsList">
                        <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="6">
                    <el-button type="primary" @click="goAddPage">添加商品</el-button>
                </el-col>
            </el-row>
            <!-- stripe隔行变色  border边框-->
        <el-table class="elTable" :data="goodsList" stripe style="width: 100%" border>
            <el-table-column type="index" label="#"></el-table-column>
            <el-table-column prop="goods_name" label="商品名称" width="500px"></el-table-column>
            <el-table-column prop="goods_price" label="商品价格（元）" width="120px"></el-table-column>
            <el-table-column prop="goods_number" label="商品重量"></el-table-column>
            <el-table-column prop="add_time" label="创建时间" width="200px">
                <template slot-scope="scope">
                    {{scope.row.add_time | dateFormat}}
                </template>
            </el-table-column>
            <el-table-column label="操作" width="200px">
                <template slot-scope="scope">
                    <el-button size="mini" type="primary" icon="el-icon-edit">修改</el-button>
                    <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeById(scope.row.goods_id)">删除</el-button>
                </template>
            </el-table-column>
        </el-table>
        <!-- 翻页 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[5, 10, 15, 20]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total" background>
            </el-pagination>
        </el-card>
    </div>
</template>

<script>
export default {
    data() {
        return {
            queryInfo: {
                // 查询参数
                query: '',
                // 当前页码
                pagenum: 1,
                // 每页显示条数
                pagesize: 10
            },
            // 接收页面数据列表
            goodsList: [],
            // 数据总条数
            total: 0
        }
    },
    created() {
        this.getGoodsList() 
    },
    methods: {
        // 获取页面数据list
        async getGoodsList() {
            const { data: res } = await this.$http.get('goods', { params: this.queryInfo })
            if(res.meta.status !== 200) {
                return this.$message.error('获取数据列表失败')
            }
            // console.log(res.data)
            this.goodsList = res.data.goods
            this.total = res.data.total
        },
        // 当每页数据条数发生变化触发
        handleSizeChange(newSize) {
            this.queryInfo.pagesize = newSize
            this.getGoodsList()
        },
        // 当页数发生改变时触发
        handleCurrentChange(newPage) {
            this.queryInfo.pagenum = newPage
            this.getGoodsList()
        },
        async removeById(id) {
            const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)
            // 如果用户点击确定删除，返回字符串confirm
            // 如果用户点击取消删除，返回字符串cancel
            if(confirmResult !== 'confirm') {
                return this.$message.info('已取消删除')
            }
            const { data: res } = await this.$http.delete(`goods/${id}`)
            if(res.meta.status !== 200) {
                return this.$message.error('删除失败')
            }
            this.$message.success('删除成功')
            this.getGoodsList()
        },
        goAddPage() {
            this.$router.push('/goods/add')
        }
    },
    computed:{

    }
}
</script>

<style lang="less" scoped>
.el-pagination, .elTable{
    margin-top:15px;
}

</style>